> If I make an off-by-one error, where, other than me, did it come from? I have seen countless instances, both in and out of software development, where a mana

> If I make an off-by-one error, where, other than me, did it come from? I have seen countless instances, both in and out of software development, where a manager: 1. Explicitly told an employee to rush through a task too quickly, and that some bugs/cleanup/whatever would be OK and handled at a later time. 2. A short time later freaked out because the rushed task was not done perfectly. Of course only terrible managers behave this way, but there are a lot of terrible managers out there. In these sorts of environments simple errors are often ubiquitous.